It’s practically a given that the adult entertainment industry is a sexist one. However, porn’s relationship with race is a subject that’s rarely if ever explored. Episode 4 of Hot Girls Wanted: Turned On puts that relationship under a low-powered microscope, and the result, like so many things in this docu-series, is eye-opening.

“Money Shot” is primarily told through four protagonists with Riley Reynolds, an aspiring porn industry entrepreneur, holding the episode’s narrative together. Reynolds was featured heavily in the original documentary, Hot Girls Wanted. As he discusses the obstacles that come with launching a new site at such a competitive time, the documentary dives into a shoot between two of Hussie Models’ stars — the African-American Jax Slayer and the white Kylie Quinn. Both stars are relatively new to the industry, though Quinn is markedly younger, only having been in porn a little over three months, and both bring a nervous energy to the episode. However, the focus is quite literally on Slayer, who is Hot Girls Wanted’s first look into the life of a male porn star. Footage of Reynolds and the director pushing the actor to his physical extremes is intercut with interviews about his experience in the industry. “Porn isn’t what it seems. It really is a job. It is work,” he says at one point. The documentary then transitions to a title card, explaining that female performers often get a premium for working with African-American talent. It’s a shocking fact as well as a racist reality that is explored through “Money Shot’s” fourth subject, Tyler Knight.

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Knight, whose interviews bookend the 38-minute episode, is an industry legend. The adult film star has starred in everything from Star Trek porn parodies to a mature version of Little Red Riding Hood. Seeing the racism of the industry through the star’s experienced eyes adds an important note of validity to the documentary.

“We literally get reduced to our lowest common denominator to appeal to the lowest common denominator. They want to see a ripped black guy with, you know, an innocent little cheerleader,” Knight said. “Porn is the last bastion of American industry where it is OK to not be hired for something specifically because of your race or your outward appearance. And it’s perfectly fine.”

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Slayer and Knight’s takes on the success of interracial porn are powerful in how frank they are. However, though these discussions are certainly the most powerful revelation of “Money Shot,” it’s far from the episode’s only surprising moment. Keeping the male talent excited is a major struggle during shoots. Both male stars recount days when they had to stay erect for up to six hours, and both admit to using pills to boost their performance. At one point, the entire shoot grinds to a halt as both Reynolds and the director wait for Slayer to finish. It’s a deeply uncomfortable moment to watch, though the scene likely encompasses only a fraction of the awkwardness Slayer experiences on a near daily basis.

For all of the complicated topics “Money Shot” tackles, the episode may be the most honest of the Hot Girls Wanted series. From Slayer and Knight’s frank depictions of industry racism to the way Reynolds’ father criticizes his son’s work, Episode 4 of Turned On is honest in a way that hurts. However, it’s Reynolds who sums up what can perhaps be called a theme of the entire series when he says, “Everyone who does porn, it’s because of the money.”

WHO'S THAT GIRL?: Holly RandallEPISODE: Episode 1, "Women on Top"WHAT'S HER STORY?: Randall is a critically-praised feminist erotic photographer, director, and producer.HER TAKE ON THE INDUSTRY: "I've got the stigma of porn attached to me. As much as I'm not ashamed of what I do for a living, there are a lot of people who view what I do for a living in a much different light than I do."

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WHO'S THAT GIRL?: Suze RandallEPISODE: Episode 1, "Women on Top"WHAT'S HER STORY?: The elder Randall is a veteran erotic photographer who was Playboy's first female photographer.HER TAKE ON THE INDUSTRY: "I feel I'm a feminist. You can take total advantage of the men if you've got the balls to do what you want, to do it better, to do it harder, and you're also cute ... Kick these guys out of line, cause it is a boy's club."

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WHO'S THAT GIRL?: Erika LustEPISODE: Episode 1, "Women on Top"WHAT'S HER STORY?: Lust is a well-known and highly regarded Swedish erotic filmmaker.HER TAKE ON THE INDUSTRY: "When I look at regular, mainstream porn, it's not good enough for me. I want something more. I want emotion. I want passion. I want intimacy. I want to feel with them."

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WHO'S THAT GIRL?: MonicaEPISODE: Episode 1, "Women on Top"WHAT'S HER STORY?: This is her first time in an erotic film. Monica specifically contacted Erika Lust to work with her.HER TAKE ON THE INDUSTRY: "It was really intense. More intense than I expect ... I think I need to process a little bit the experience."

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WHO'S THAT GIRL?: JessicaEPISODE: Episode 2, "Love Me Tinder"WHAT'S HER STORY?: James Rhine was seeing her before she was ghosted by the former reality TV star.HER TAKE ON ONLINE DATING: "I don't think you should [ghost] the girl you were dating for the past, I don't know ... two to three months."

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WHO'S THAT GIRL?: AlexisEPISODE: Episode 2, "Love Me Tinder"WHAT'S HER STORY?: The former Big Brother contestant ghosts another woman to date Alexis.HER TAKE ON ONLINE DATING: "In the world of dating, people are so quick to -- and again, I'm the same way. It's like you're on to the next guy, moving on."

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WHO'S THAT GIRL?: Bailey RayneEPISODE: Episode 3, "Owning It"WHAT'S HER STORY?: Rayne is a cam girl and maternal role model who recruits girls to the porn industry.HER TAKE ON THE INDUSTRY: "It's a job. It's a legitimate job. And most successful girls treat it like a legitimate job."

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WHO'S THAT GIRL?: Bonnie KinzEPISODE: Episode 3, "Owning It"WHAT'S HER STORY?: Kinz is new to the world of porn, and her experience quickly goes from fun to depressing.HER TAKE ON THE INDUSTRY: "I wanted to change my name before I started doing boy-girl because I just wanted to like be more authentic to myself, and I thought that I should just go by my first name, which is Kylie ... I like doing this. It's fun."

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WHO'S THAT GIRL?: Kylie QuinnEPISODE: Episode 4, "Money Shot"WHAT'S HER STORY?: She is 18, has been in the industry a little over three months, and has signed with the rising agency Hussie Model. Her episode deals with interracial porn.HER TAKE ON THE INDUSTRY: "They're like, 'Oh make sure you say big black c***.' And that to me sounds fake. Like it's just a big c***."

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WHO'S THAT GIRL?: Alice FrostEPISODE: Episode 5, "Take Me Private"WHAT'S HER STORY?: Frost is a cam girl who makes most of her money in private chat rooms. In her episode, she meets one of her clients live for the first time.HER TAKE ON THE INDUSTRY: "I'm a psychiatrist. Yes, I might be doing it naked, but I'm making a difference, you know? I seem to change people's lives in a positive way. I wouldn't keep doing this if I felt that I was causing any negative issues."

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WHO'S THAT GIRL?: Marina LoninaEPISODE: Episode 6, "Don't Stop Filming"WHAT'S HER STORY?: After live-streaming her friend's rape on Periscope, Lonina faces rape and kidnapping charges. The episode explores her trial and whether or not she will have to register as a sex offender.HER EXPLANATION OF THE VIDEO: "Of course I regret that things turned out like this. I'm very sad about it ... I may seem very calm, but this isn't really how I feel. Deep in my heart, there's a lot of pain and sadness."